Give two examples of potential energy becoming
What is the formula for calculating the
efficiency of a machine?
Why do you always multiply the efficiency
If a container weighs 58 N, then it should
take 580 J of work to move it 10 m up a ramp. However, it actually
takes 640 J of energy to move it due to friction. What is the efficiency
of this system?
Define and give an example in parenthesis:
What is a perpetual motion machine?
Why is it impossible to build a perpetual
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